MIL-DTL-38999 Series II connectors are designed for rugged environments, with up to 128 contacts in an environmentally sealed insert. Operating between -65°C and 200°C, these connectors offer durability and reliability. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering plating options such as gold and electroless nickel, they ensure high performance in demanding applications. With RoHS compliant finishes and a service rating of E for environment resistance, they are ideal for military and industrial use.